, cnn, new york. >>> that does it for us. have a fabulous weekend. don lemon in for tony harris today. >> we're in the wrong business. we have to do something else besides this. have a great weekend, kyra. >>> live from studio 7 at the cnn world headquarters in atlanta, big stories for friday september 24th. comedian stephen colbert tells congress about his day as a migrant farm worker. >>> the military special ops weather team in action. a critical unit when war depends on the battlefield forecast. >> what does this have to do with weather? >> well, you have to be alive to report the weather. >>> and home, after more than a year in an iran prison, sarah shourd sits down today with cnn. >> nothing in life can prepare you for something like this. >>> good morning, everyone. i'm don lemon. tony is off today. those stories and your comments right here right now in the cnn newsroom. >> but, up first, mr. colbert goes to washington. comedy central funny man stephen colbert brings his spin to serious issues, farm labor and immigration. he testified momenting ago before a congressional subco